California's 9th congressional district
California's 9th congressional district is a congressional district in the U.S. state of California. Josh Harder, a Democrat, has represented the district since January 2023.
Currently, the district includes most of San Joaquin County and small parts of neighboring Contra Costa County and Stanislaus County. It includes the cities of Stockton, Lodi, Tracy, Manteca, and Mountain House in San Joaquin County, and the census-designated place of Discovery Bay in Contra Costa County.
The district was one of 13 congressional districts that voted for Donald Trump in the 2024 presidential election while simultaneously electing a Democrat in the 2024 House of Representatives elections.
Recent election results from statewide races
2023–2027 boundaries
Composition
Under the 2020 redistricting, California's 9th congressional district is located between the Sacramento Valley, Gold Country, and the San Joaquin Valley. It encompasses most of San Joaquin County, and parts of Contra Costa and Stanislaus Counties. The area in San Joaquin County includes the cities of Stockton, Tracy, Manteca, Lodi, Ripon, and Escalon; and the census-designated places Mountain House, Terminous, Thornton, Collierville, Woodbridge, Acampo, Dogtown, Lockeford, Victor, Lincoln Village, Morada, Country Club, August, Garden Acres, Kennedy, Taft Mosswood, French Camp, Waterloo, Linden, Peters, Farmington, and Del Rio. The area in Contra Costa County includes the census-designated places Discovery Bay and Byron. The area in Stanislaus County includes the census-designated place Valley Home.San Joaquin County is split between this district and the 13th district. They are partitioned by Union Pacific, Highway 380, S Tracy Blvd, the California Aqueduct, S Banta Rd, Highway 5, Paradise Cut, S Manthey Rd, Walthall Slough, E West Ripon Rd, Kincaid Rd, Hutchinson Rd, and Stanislaus River.
Contra Costa County is split between this district and the 10th district. They are partitioned by Old River, Italian Slough, Western Farms Ranch Rd, Rankin Rd, Highway J14, Byron Hot Springs Rd, Camino Diablo, Kellogg Creek, Sellers Ave, Brentwood Blvd, Alloro Dr, Ghiggeri Dr, Emilio Dr, Guthrie Ln, Balfour Rd, Chestnut St, Byron Highway, Orwood Rd, Burlington Northern Santa Fe, Werner Dredger Cut, and Rock Slough.
Stanislaus County is split between this district and the 13th district. Lon Dale Rd, Highway J9, Highway J14, River Rock Rd, Lesnini Creek, Sonora Rd, and Stanislaus River.
Cities and CDPs with 10,000 or more people
- Stockton – 320,804
- Tracy – 93,000
- Manteca – 83,498
- Lodi – 67,258
- Mountain House – 24,499
- Ripon – 16,013
- Discovery Bay – 15,385
- Garden Acres – 11,398
- Country Club – 10,777
2,500 – 10,000 people
- August – 8,628
- Escalon – 7,472
- Lincoln Village – 4,401
- Woodbridge – 4,031
- French Camp – 3,770
- Lockeford – 3,521
- Kennedy – 3,256
- Morada – 3,166
- Collierville – 2,698
- Dogtown – 2,643
List of members representing the district